Hannes contributed to the Nitrokey/nitrokey-documentation repository by enhancing security-focused documentation and improving onboarding reliability. He updated RST-based guides to reflect changes in hard disk decryption defaults for nitropad v54 and introduced a dedicated post-install update section, addressing compatibility issues with Qubes 4.2.3 install images. In later work, Hannes strengthened the NextBox Getting Started Guide by adding critical guidance on device power and connectivity during updates, reducing user error and support needs. He also improved documentation quality by fixing spelling errors and broken hyperlinks, demonstrating attention to detail and a methodical approach to maintaining clear, reliable technical documentation.